:root{--bg:#F6FAFC;--paper:#fff;--soft:#EAF6FA;--soft2:#EDF4F8;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--navy:#174B78;--title:#183A56;--text:#31485D;--muted:#687D8E;--line:#DCE9F0;--footer:#123653}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--bg);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--text);overflow-x:hidden}a{color:#116CAC;text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#07558e}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #25B6E8;outline-offset:4px}button{font:inherit;cursor:pointer}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.38;letter-spacing:-.02em}h1{font-size:clamp(27px,3.3vw,42px)}h2{font-size:clamp(21px,2.3vw,27px)}h3{font-size:clamp(17px,1.7vw,21px)}p{margin-bottom:16px}ul,ol{padding-left:1.5em}li{margin:7px 0}.wrap{width:min(1180px,calc(100% - 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